Written by Paula Clifford

It’s sometimes easy to forget our species is under constant attack.

Our access to safe food supplies guards us against dangerous bacteria, viruses and parasites. Modern plumbing and sewage systems have relegated several diseases to rare threats. Then there are vaccines. Once common diseases like hepatitis are relatively rare and polio has nearly vanished thanks to vaccinations many of us received in the first few weeks of life. Read more.

Published February 14th, 2020 by InsideSources